| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * linux/arch/arm/lib/csumpartialcopy.S |
| * |
| * Copyright (C) 1995-1998 Russell King |
| */ |
| #include <linux/linkage.h> |
| #include <asm/assembler.h> |
| |
| .text |
| |
| /* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum) |
| * Params : r0 = src, r1 = dst, r2 = len, r3 = checksum |
| * Returns : r0 = new checksum |
| */ |
| |
| .macro save_regs |
| stmfd sp!, {r1, r4 - r8, lr} |
| .endm |
| |
| .macro load_regs |
| ldmfd sp!, {r1, r4 - r8, pc} |
| .endm |
| |
| .macro load1b, reg1 |
| ldrb \reg1, [r0], #1 |
| .endm |
| |
| .macro load2b, reg1, reg2 |
| ldrb \reg1, [r0], #1 |
| ldrb \reg2, [r0], #1 |
| .endm |
| |
| .macro load1l, reg1 |
| ldr \reg1, [r0], #4 |
| .endm |
| |
| .macro load2l, reg1, reg2 |
| ldr \reg1, [r0], #4 |
| ldr \reg2, [r0], #4 |
| .endm |
| |
| .macro load4l, reg1, reg2, reg3, reg4 |
| ldmia r0!, {\reg1, \reg2, \reg3, \reg4} |
| .endm |
| |
| #define FN_ENTRY ENTRY(csum_partial_copy_nocheck) |
| #define FN_EXIT ENDPROC(csum_partial_copy_nocheck) |
| |
| #include "csumpartialcopygeneric.S" |
